[Qemu-devel] [PULL 10/43] linux-user: Change thread_env to CPUState

["Andreas Färber" <afaerber@suse.de>]

Signed-off-by: Andreas Färber <afaerber@suse.de>
---
 linux-user/elfload.c   | 16 +++++++++-------
 linux-user/linuxload.c |  3 ++-
 linux-user/main.c      | 10 +++++-----
 linux-user/qemu.h      |  2 +-
 linux-user/signal.c    | 12 +++++++-----
 linux-user/syscall.c   |  6 +++---
 6 files changed, 27 insertions(+), 22 deletions(-)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index d517450..7ce2eab 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -125,7 +125,7 @@ typedef abi_int         target_pid_t;
 static const char *get_elf_platform(void)
 {
     static char elf_platform[] = "i386";
-    int family = (thread_env->cpuid_version >> 8) & 0xff;
+    int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
     if (family > 6)
         family = 6;
     if (family >= 3)
@@ -137,7 +137,9 @@ static const char *get_elf_platform(void)
 
 static uint32_t get_elf_hwcap(void)
 {
-    return thread_env->features[FEAT_1_EDX];
+    X86CPU *cpu = X86_CPU(thread_cpu);
+
+    return cpu->env.features[FEAT_1_EDX];
 }
 
 #ifdef TARGET_X86_64
@@ -404,7 +406,7 @@ static int validate_guest_space(unsigned long guest_base,
 
 static uint32_t get_elf_hwcap(void)
 {
-    CPUARMState *e = thread_env;
+    ARMCPU *cpu = ARM_CPU(thread_cpu);
     uint32_t hwcaps = 0;
 
     hwcaps |= ARM_HWCAP_ARM_SWP;
@@ -415,7 +417,7 @@ static uint32_t get_elf_hwcap(void)
 
     /* probe for the extra features */
 #define GET_FEATURE(feat, hwcap) \
-    do {if (arm_feature(e, feat)) { hwcaps |= hwcap; } } while (0)
+    do { if (arm_feature(&cpu->env, feat)) { hwcaps |= hwcap; } } while (0)
     GET_FEATURE(ARM_FEATURE_VFP, ARM_HWCAP_ARM_VFP);
     GET_FEATURE(ARM_FEATURE_IWMMXT, ARM_HWCAP_ARM_IWMMXT);
     GET_FEATURE(ARM_FEATURE_THUMB2EE, ARM_HWCAP_ARM_THUMBEE);
@@ -619,13 +621,13 @@ enum {
 
 static uint32_t get_elf_hwcap(void)
 {
-    CPUPPCState *e = thread_env;
+    PowerPCCPU *cpu = POWERPC_CPU(thread_cpu);
     uint32_t features = 0;
 
     /* We don't have to be terribly complete here; the high points are
        Altivec/FP/SPE support.  Anything else is just a bonus.  */
 #define GET_FEATURE(flag, feature)                                      \
-    do {if (e->insns_flags & flag) features |= feature; } while(0)
+    do { if (cpu->env.insns_flags & flag) { features |= feature; } } while (0)
     GET_FEATURE(PPC_64B, QEMU_PPC_FEATURE_64);
     GET_FEATURE(PPC_FLOAT, QEMU_PPC_FEATURE_HAS_FPU);
     GET_FEATURE(PPC_ALTIVEC, QEMU_PPC_FEATURE_HAS_ALTIVEC);
@@ -2667,7 +2669,7 @@ static int fill_note_info(struct elf_note_info *info,
     /* read and fill status of all threads */
     cpu_list_lock();
     for (cpu = first_cpu; cpu != NULL; cpu = cpu->next_cpu) {
-        if (cpu == ENV_GET_CPU(thread_env)) {
+        if (cpu == thread_cpu) {
             continue;
         }
         fill_thread_info(info, (CPUArchState *)cpu->env_ptr);
diff --git a/linux-user/linuxload.c b/linux-user/linuxload.c
index 381ab89..5cd6d91 100644
--- a/linux-user/linuxload.c
+++ b/linux-user/linuxload.c
@@ -89,7 +89,8 @@ static int prepare_binprm(struct linux_binprm *bprm)
 abi_ulong loader_build_argptr(int envc, int argc, abi_ulong sp,
                               abi_ulong stringp, int push_ptr)
 {
-    TaskState *ts = (TaskState *)thread_env->opaque;
+    CPUArchState *env = thread_cpu->env_ptr;
+    TaskState *ts = (TaskState *)env->opaque;
     int n = sizeof(abi_ulong);
     abi_ulong envp;
     abi_ulong argv;
diff --git a/linux-user/main.c b/linux-user/main.c
index 564bed6..67ea9ba 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -120,7 +120,7 @@ void fork_end(int child)
     if (child) {
         /* Child processes created by fork() only have a single thread.
            Discard information about the parent threads.  */
-        first_cpu = ENV_GET_CPU(thread_env);
+        first_cpu = thread_cpu;
         first_cpu->next_cpu = NULL;
         pending_cpus = 0;
         pthread_mutex_init(&exclusive_lock, NULL);
@@ -128,7 +128,7 @@ void fork_end(int child)
         pthread_cond_init(&exclusive_cond, NULL);
         pthread_cond_init(&exclusive_resume, NULL);
         pthread_mutex_init(&tcg_ctx.tb_ctx.tb_lock, NULL);
-        gdbserver_fork(thread_env);
+        gdbserver_fork((CPUArchState *)thread_cpu->env_ptr);
     } else {
         pthread_mutex_unlock(&exclusive_lock);
         pthread_mutex_unlock(&tcg_ctx.tb_ctx.tb_lock);
@@ -232,7 +232,7 @@ void fork_start(void)
 void fork_end(int child)
 {
     if (child) {
-        gdbserver_fork(thread_env);
+        gdbserver_fork((CPUArchState *)thread_cpu->env_ptr);
     }
 }
 
@@ -3150,7 +3150,7 @@ void cpu_loop(CPUS390XState *env)
 
 #endif /* TARGET_S390X */
 
-THREAD CPUArchState *thread_env;
+THREAD CPUState *thread_cpu;
 
 void task_settid(TaskState *ts)
 {
@@ -3640,7 +3640,7 @@ int main(int argc, char **argv, char **envp)
     cpu_reset(ENV_GET_CPU(env));
 #endif
 
-    thread_env = env;
+    thread_cpu = ENV_GET_CPU(env);
 
     if (getenv("QEMU_STRACE")) {
         do_strace = 1;
diff --git a/linux-user/qemu.h b/linux-user/qemu.h
index 20d171c..6569608 100644
--- a/linux-user/qemu.h
+++ b/linux-user/qemu.h
@@ -198,7 +198,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                     abi_long arg5, abi_long arg6, abi_long arg7,
                     abi_long arg8);
 void gemu_log(const char *fmt, ...) GCC_FMT_ATTR(1, 2);
-extern THREAD CPUArchState *thread_env;
+extern THREAD CPUState *thread_cpu;
 void cpu_loop(CPUArchState *env);
 char *target_strerror(int err);
 int get_osversion(void);
diff --git a/linux-user/signal.c b/linux-user/signal.c
index c4e20dc..42d8911 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -388,17 +388,18 @@ static inline void free_sigqueue(CPUArchState *env, struct sigqueue *q)
 /* abort execution with signal */
 static void QEMU_NORETURN force_sig(int target_sig)
 {
-    TaskState *ts = (TaskState *)thread_env->opaque;
+    CPUArchState *env = thread_cpu->env_ptr;
+    TaskState *ts = (TaskState *)env->opaque;
     int host_sig, core_dumped = 0;
     struct sigaction act;
     host_sig = target_to_host_signal(target_sig);
-    gdb_signalled(thread_env, target_sig);
+    gdb_signalled(env, target_sig);
 
     /* dump core if supported by target binary format */
     if (core_dump_signal(target_sig) && (ts->bprm->core_dump != NULL)) {
         stop_all_tasks();
         core_dumped =
-            ((*ts->bprm->core_dump)(target_sig, thread_env) == 0);
+            ((*ts->bprm->core_dump)(target_sig, env) == 0);
     }
     if (core_dumped) {
         /* we already dumped the core of target process, we don't want
@@ -503,6 +504,7 @@ int queue_signal(CPUArchState *env, int sig, target_siginfo_t *info)
 static void host_signal_handler(int host_signum, siginfo_t *info,
                                 void *puc)
 {
+    CPUArchState *env = thread_cpu->env_ptr;
     int sig;
     target_siginfo_t tinfo;
 
@@ -522,9 +524,9 @@ static void host_signal_handler(int host_signum, siginfo_t *info,
     fprintf(stderr, "qemu: got signal %d\n", sig);
 #endif
     host_to_target_siginfo_noswap(&tinfo, info);
-    if (queue_signal(thread_env, sig, &tinfo) == 1) {
+    if (queue_signal(env, sig, &tinfo) == 1) {
         /* interrupt the virtual CPU as soon as possible */
-        cpu_exit(ENV_GET_CPU(thread_env));
+        cpu_exit(thread_cpu);
     }
 }
 
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 4c96f4f..433d3ba 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4171,8 +4171,8 @@ static void *clone_func(void *arg)
 
     env = info->env;
     cpu = ENV_GET_CPU(env);
-    thread_env = env;
-    ts = (TaskState *)thread_env->opaque;
+    thread_cpu = cpu;
+    ts = (TaskState *)env->opaque;
     info->tid = gettid();
     cpu->host_tid = info->tid;
     task_settid(ts);
@@ -5079,7 +5079,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
                 sys_futex(g2h(ts->child_tidptr), FUTEX_WAKE, INT_MAX,
                           NULL, NULL, 0);
             }
-            thread_env = NULL;
+            thread_cpu = NULL;
             object_unref(OBJECT(ENV_GET_CPU(cpu_env)));
             g_free(ts);
             pthread_exit(NULL);
-- 
1.8.1.4